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Title	Orthorectification of full-polarimetric Radarsat-2 data using accurate LIDAR DSM
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Author	Toutin, T; Wang, H; Chomaz, P; Pottier, E
Source	IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers) vol. 51, issue 12, 2013 p. 5252-5258, https://doi.org/10.1109/TGRS.2012.2233206
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Year	2013
Alt Series	Earth Sciences Sector, Contribution Series 20120239
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Document	serial
Lang.	English
Media	paper; on-line; digital
File format	pdf
Province	Quebec
NTS	21L/14; 21L/15
Area	Île d'Orléans
Lat/Long WENS	-71.5000 -70.5000 47.0000 46.7500
Subjects	geophysics; remote sensing; radar imagery; radar methods; mapping techniques; computer mapping; SAR
Program	Topographic Mapping
Released	2013 12 01
Abstract	Orthorectification using digital terrain models is a key issue for full-polarimetric complex SAR data because resampling the complex data can corrupt the polarimetric phase, mainly in terrain with relief. This research thus compared two methods for the orthorectification of the complex SAR data: The polarimetric processing is performed before (image-space method) or after (ground-space method) the geometric processing. Radarsat-2 fine-quad data acquired with different look angles over a hilly relief study site were orthorectified using accurate light detection and ranging digital surface model. Quantitative evaluations between the two methods as a function of different geometric and radiometric parameters were thus performed to evaluate the impact during orthorectification. The results demonstrated that the look angles and the terrain slopes can potentially corrupt the polarimetric complex SAR data during its orthorectification with the ground-space method. In addition, general advice is provided to reduce these impacts to an acceptable level for the users and their polarimetric applications.
GEOSCAN ID	291926